‘Happy Birthday to all my Leo brothers and sisters. Let’s eat cake!' she captioned her picture.

The reactions fell into three camps.

Pure shock.

Envy.

And more shock.

Bassett starred in Marvel’s Black Panther this year as T'Challa (played by Chadwick Boseman) and Shuri (played by Letitia Wright)'s mother, Ramonda – the Queen Mother of Wakanda.

Bassett says she knew the film was something special while filming,; 'There's some moments and some sets where everyone catches the fever of it, the heat of it, and they're bringing the best to the moment. They're giving the full measure of their devotion, everyone. And that's what you experienced and felt and saw on that set,' according to a round table with The Hollywood Reporter.

Bassett has also been busy promoting Mission Impossible: Fallout on a press tour, she plays Erica Sloane, the new Director of the Central Intelligence Agency in the film which also stars Vanessa Kirby as is in cinemas in the UK now.